WO2012150066A1 - Dispositif de serrage d'outil - Google Patents

Dispositif de serrage d'outil Download PDF

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Publication number
WO2012150066A1
WO2012150066A1 PCT/EP2012/054123 EP2012054123W WO2012150066A1 WO 2012150066 A1 WO2012150066 A1 WO 2012150066A1 EP 2012054123 W EP2012054123 W EP 2012054123W WO 2012150066 A1 WO2012150066 A1 WO 2012150066A1
Authority
WO
WIPO (PCT)
Prior art keywords
tool
machining
clamping
clamping device
positive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2012/054123
Other languages
German (de)
English (en)
Inventor
Marcel Fankhauser
Bruno Luescher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to CN201280021739.XA priority Critical patent/CN103501962B/zh
Priority to RU2013153479/02A priority patent/RU2013153479A/ru
Priority to US14/115,546 priority patent/US20140182873A1/en
Priority to EP12710055.0A priority patent/EP2704875A1/fr
Publication of WO2012150066A1 publication Critical patent/WO2012150066A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B45/00—Means for securing grinding wheels on rotary arbors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating grinding tools; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B27/00—Other grinding machines or devices
    • B24B27/06—Grinders for cutting-off
    • B24B27/08—Grinders for cutting-off being portable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2614—Means for mounting the cutting member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B19/00—Other reciprocating saws with power drive; Fret-saws
    • B27B19/006—Other reciprocating saws with power drive; Fret-saws with oscillating saw blades; Hand saws with oscillating saw blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
    • B27B5/29—Details; Component parts; Accessories
    • B27B5/30—Details; Component parts; Accessories for mounting or securing saw blades or saw spindles
    • B27B5/32—Devices for securing circular saw blades to the saw spindle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/26—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis substantially perpendicular to the line of cut
    • B26D1/30—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis substantially perpendicular to the line of cut with limited pivotal movement to effect cut
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/33—Member applies axial force component

Definitions

  • tool clamping devices with a tool holder, which has a first and a second positive locking element, which are each provided for a positive connection with a machining tool in a circumferential direction about a machining rotation axis.
  • the invention is based on a tool clamping device, in particular an oscillating tool clamping device, with a tool holder which has at least one first and one second form-locking element, which are each provided at least for a positive connection with a machining tool in a circumferential direction about a machining rotation axis.
  • the form-fitting elements are mounted so as to be rotatable relative to one another at least with respect to a rotation axis which is oriented at least substantially parallel to the machining rotation axis and / or along at least one movement axis which is oriented at least substantially perpendicularly with respect to an axis which is parallel to the processing axis of rotation, are mounted against each other movable.
  • the axis of rotation corresponds at least substantially to the machining rotation axis.
  • a "tool holder” is to be understood in particular an arrangement of components which is intended to receive a machining tool in at least one operating state and in particular in at least one, advantageously in at least two directions of movement and preferably in each To fix movement direction and preferably tighten.
  • the tool holder of components of the tool clamping device is formed, which are in an operating state with recorded machining tool in direct contact with the machining tool.
  • a "machining tool” should be understood to mean, in particular, a tool for machining.
  • a machining rotation axis is to be understood, in particular, as an axis of rotation and / or pivot axis of the tool mount at least in an operating state with a clamped machining tool.
  • the machining tool is positively connected in the "circumferential direction" about a machining rotational axis with a form-locking element
  • the positive-locking element and the machining tool each have at least one interlocking means, which preferably intermesh and, in particular, in an operating state with Preferably, by a rotation of the machining tool or the interlocking means inserted into the tool holder, a rotation of at least 2 °, advantageously of at least 1 °, preferably of at least 0, is achieved by a rotation of the machining tool engaged in the tool holder.
  • 5 ° causes a rotation of the respective other part, meaning that two axes are "essentially parallel", in particular, that a straight line which is parallel to the one axis should be understood is, and cut the other axis in at least one point and have a cutting angle, in particular less than 10 °, advantageously less than 5 °, and preferably less than 1 °.
  • two axes are “substantially perpendicular” perpendicular, it should be understood in particular that the two axes intersect in at least one point and have a cutting angle of less than 10 °, advantageously less than 5 ° and preferably less than 1 ° is different from 90 °, which means that two axes "substantially correspond”, in particular, to be understood to be essentially parallel and to be closest to one another
  • Point to each other have a distance which is smaller than 5 mm, advantageously smaller than 2 mm and preferably smaller than 0.5 mm.
  • an efficiency of the oscillation tool can be increased.
  • an attachment independent of production tolerances of the interlocking mold closing means of the machining tool and / or of the interlocking elements can be achieved. It can be particularly efficient be increased.
  • the tool clamping device has a limiting unit which is provided to restrict at least one degree of freedom of rotation and / or movement of the positive locking elements against each other.
  • a "degree of freedom” is to be understood in particular as meaning a direction of movement and / or rotation in which a movement is possible. preferably a rotation about the axis of rotation, in a range of at least 2 ° and at most 15 °, advantageously at most 10 ° and preferably at most 3 ° and / or a movement, preferably a movement in the direction of the machining rotation axis, in a range of at least 0th , 5 mm and a maximum of 3 mm, advantageously at most 2 mm and preferably at most 1 mm is made possible.
  • a loss of at least one of the interlocking elements can be achieved.
  • the tool clamping device has a clamping unit which has at least one clamping element which, in at least one operating state, is provided at least for bracing the form-fitting elements against one another along the machining rotational axis.
  • a “clamping unit” is to be understood in particular as a unit which secures a machining tool by means of a positive connection and / or by means of a frictional connection along the machining rotational axis.
  • the tensioning element is preferably part of the tool receptacle and is provided for the machining tool in at least one operating state
  • the clamping element has at least one clamping head,
  • at least one clamping surface is arranged on the clamping head, which is provided for an axial overlap with the machining tool overlap " is intended here in particular to define an overlap, in particular of partial areas, of at least two components, in particular a straight line running parallel to the machining rotation axis intersects the two components.
  • the clamping surface of the clamping head preferably covers at least a portion of the machining tool along the machining rotational axis in an operating state in which the machining tool is clamped to the tool holder by means of the clamping head.
  • the cover can be temporarily removed in an assembled state of the clamping head, in particular for changing the machining tool and / or a change in position of the machining tool.
  • the tool clamping device has at least one operating unit, which is provided for an actuation of the clamping unit.
  • the term "operating unit” should in particular define a unit which has at least one operating element which can be actuated directly by an operator and which is provided by means of an actuation and / or by inputting parameters a process and / or a state It is in particular possible to achieve a fixation of a position of the interlocking elements that is free of play with respect to the machining tool.
  • the tool holder has at least one clamping force amplification unit, which is provided at least to reinforce a clamping force transmitted over the clamping element to a larger relative clamping force of the form-locking elements against each other.
  • the relative clamping force serves for frictional connection of the positive locking elements, preferably in the circumferential direction and / or for bracing at least one positive locking means of at least one of the positive locking elements with at least one positive locking means of a machining tool.
  • an improved fixation of the play-free position can be achieved.
  • the clamping force amplification unit has at least one inclined surface which is arranged on at least one of the form-locking elements.
  • An "inclined surface” should be understood to mean, in particular, a surface which, at least in one operating state with a clamping tool clamped on at least one axis parallel to the machining rotation axis Angle between 5 ° and 30 °, advantageously between 10 ° and 20 ° and preferably between 12 ° and 18 ° is cut.
  • angle of inclination is referred to below as "angle of inclination.”
  • the angle of inclination to at least 50%, advantageously at least 70%, preferably at least 90%, is at least substantially equal to the oblique surface together form at least one pair of inclined surfaces which are pressed against one another by the clamping force at least in an operating state with a clamping tool clamped in.
  • a "pair of inclined surfaces” is to be understood in particular as two inclined surfaces of different form-locking elements whose inclination angles deviate from one another by less than 1 ° ,
  • two inclined surfaces of a pair of cut surfaces are at least substantially parallel.
  • two oblique surfaces are substantially parallel, it should be understood in particular that at least one normal vector of one oblique surface intersects the other oblique surface at least substantially perpendicularly, at least in one operating state with a clamped machining tool.
  • a relative clamping force which corresponds to the clamping force divided by the sine of the angle of inclination, is established on the inclined surface. It can be achieved in particular a simple, inexpensive clamping force reinforcement.
  • the inclined surface is formed as a cone.
  • the one positive locking element preferably the first positive locking element, preferably has an inner cone and the other positive locking element has an outer cone which, at least in one operating state, engages with one another with the tool holder mounted.
  • the at least one clamping cone is provided to a frictional connection between the positive-locking elements. In particular, a simple clamping of the positive-locking elements can be achieved.
  • the tool clamping device preferably has an actuating unit which is provided at least for fixing a standard relative position of the positive-locking elements.
  • a "standard relative position" is to be understood, in particular, as a relative position in which the interlocking elements are in an operating state with a mounted tool holder, which preferably is in an operating state with a loaded and / or tightened state. different machining tool.
  • the setting unit is provided to move the interlocking elements in an operating state with mounted tool holder, which differs from an operating state with inserted and / or clamped machining tool, in particular by an influence of gravity, from a deviating from the standard relative position relative position in the standard relative position. In particular, ease of use can be increased.
  • the setting unit has at least one elastic element which is provided for bracing the form-fitting elements against one another when their relative position differs from the standard relative position.
  • the elastic element is arranged in an assembled state of the tool holder between the form-fitting elements.
  • an “elastic element” is to be understood as meaning in particular an element which is at least 90% of an elastic material, preferably a material with a modulus of elasticity between 0.1 N / mm 2 and 100 N / mm 2 , preferably between 1 and 10 N / mm 2 , in particular of natural and / or chemically produced and / or treated rubber, latex, rubber and / or a comparable material, in particular a material of the elastic element has a Shore hardness between 30 and 100, in particular between 45 and 90, advantageously between 60 and 80.
  • the elastic element is integrally formed on at least one of the interlocking elements and / or integrally connected to at least one of the positive interlocking elements , in particular as a spiral spring, can be formed g of the interlocking elements are achieved in the standard relative position.
  • at least one positive locking means is arranged on the interlocking elements, which has at least one chamfer.
  • a "chamfer" is to be understood in particular as meaning a surface which has an angle of inclination between 35 ° and 55 ° and which preferably has a width of at least 1 mm in its smallest main extension direction and are intended for this purpose in form-locking means designed as erasers. of a machining tool.
  • a reverse execution is just as conceivable. In particular, a simple assembly of the machining tool can be achieved.
  • the invention is further based on a portable power tool, in particular a hand tool with an oscillating drivable spindle, with a machine tool clamping device according to the invention.
  • a "portable power tool” is to be understood here in particular as meaning a power tool, in particular a power tool, which can be transported by an operator so that it can not be transported Particularly preferably less than 5 kg, it can advantageously be achieved a high ease of use for an operator of the power tool.
  • the tool clamping device according to the invention should not be limited to the applications and embodiments described above and below.
  • the tool clamping device according to the invention can have a number deviating from a number of individual means, elements, components and units mentioned herein for fulfilling a mode of operation described herein.
  • FIG. 1 shows a machine tool according to the invention with a machine tool clamping device according to the invention in a schematic representation
  • FIG. 2 is an exploded view of a tool holder according to the invention
  • FIG. 3 is a plan view of the tool holder of Figure 3 with inserted machining tool
  • Fig. 5 is an exploded view of an alternative tool holder according to the invention.
  • Fig. 6 is a schematic sectional view through a portion of the
  • the portable power tool 38 includes a power tool housing 42 that encloses an electric motor unit 44, a gear unit 46, and a power take off unit 48 of the portable power tool 38.
  • the machine tool housing 42 in this case comprises two housing half-shells 50, 52 which are detachably connected to each other along a plane passing through a machining rotation axis 54.
  • the machining rotation axis 54 corresponds to an axis of rotation of a hollow shaft 56 formed as a spindle 40 of the output unit 48 ( Figure 4).
  • the spindle 40 is provided to drive the machining tool 16 in a mounted state with a clamped machining tool 16.
  • the machining tool 16 can be fastened to a tool holder 58 of the output unit 48 for machining workpieces.
  • the tool holder has a first and a second positive locking element 28, 30, each with a positive connection with the machining tool 16 are provided in a circumferential direction 62 about the machining rotation axis 54.
  • the second positive locking element 30 is pressed with the hollow shaft 56.
  • a pivoting movement of the hollow shaft 56 can be transmitted to the tool holder 58 ( Figure 4).
  • the arranged in the machine tool housing 42 electric motor unit 44 and the gear unit 46 are provided in an operating mode in a manner known in the art, an oscillating pivotal movement of the spindle 40 and thus the hollow shaft 56 to produce.
  • the oscillating pivoting movement of the hollow shaft 56 is transmitted to the machining tool 16 via the tool holder 58.
  • the machining tool 16 twelve designed as MitEnglisheausEnglishept positive locking means 60 which are formed as holes and in a circular ring along a circumferential direction 62 evenly distributed on the machining tool 16 are arranged.
  • the tool holder 58 has with the positive locking means 60 corresponding, designed as a bump-like projections form-fitting means 65, 66, 67 which extend in a mounted state of the machining tool 16 on the tool holder 58 along straight lines parallel to the machining axis tion 54 by the interlocking means 60 therethrough ,
  • the positive locking means 65, 66, 67 are uniformly distributed to the two positive locking elements 28, 30 ( Figure 2).
  • the interlocking means 65, 66, 67 are arranged alternately in a circular ring along the circumferential direction 62 (FIGS. 2, 3).
  • the portable power tool 38 includes the power tool clamping device 10 (FIG. 4).
  • the machine tool clamping device 10 comprises a clamping unit 12, which has a clamping element 14, which in a clamping mode to a clamping of the machining tool 16 against the tool holder 58 along the
  • the tensioning element 14 extends through the Hollow shaft 56 through.
  • the clamping element 14 extends beyond the hollow shaft 56 at an end of the hollow shaft 56 facing the machining tool 16.
  • the clamping element 14 also extends beyond the hollow shaft 56 also.
  • the clamping element 14 further extends through holes which are arranged centrally and round in the form-locking elements 28, 30 and, when a machining tool 16 is inserted in the tool holder 58, by a Aufsteckaus Principleung 64 of the machining tool 16.
  • the hole in the second positive locking element 30 is formed in two stages. In an assembled state, starting from the clamping head, the hole in the second
  • Positive-locking element 30 viewed from the clamping heads 20, 21 from a diameter corresponding to a constant diameter of the hole in the first positive locking element. After a short distance, the hole widens with a 45 ° inclination to a larger diameter and then continues with a constant diameter.
  • the clamping unit 12 has an operating unit 88 for actuating the clamping element 14.
  • the operating unit 88 comprises for actuating the clamping unit 12, an operating lever 90 which is rotatably mounted about a coaxial with the processing axis of rotation 54 of the hollow shaft 56 extending axis of rotation.
  • the operating lever 90 is additionally mounted pivotably about an at least substantially perpendicular to the machining rotation axis 54 extending pivot axis.
  • the operating unit 88 converts a movement of the operating lever 90 into a translatory movement of the clamping element 14 along the machining rotation axis 54.
  • the clamping element 14 is designed as a spreading element (cf., FIG. 4).
  • a clamping head-side end of the clamping element 14 is formed like a tuning fork with two long brackets and is continued at a contact point of the bracket as a round rod. At the ends of the two brackets of the clamping element 14 each one of the clamping heads 20, 21 is arranged.
  • the brackets spread due to an internal stress, which was built up during a dissolution process.
  • the clamping heads 20, 21 establish axial overlaps with a machining tool 16 inserted in the tool holder 58 and finally press the machining tool 16 against the tool holder 58.
  • the positive locking means 65, 66, 67 are uniformly distributed to the two positive locking elements 28, 30.
  • the interlocking means 65, 66, 67 are arranged alternately in a circular ring along the circumferential direction 62.
  • Each of the positive locking elements 28, 30 has six positive locking means 65, 67 and 66, respectively.
  • the interlocking means 65, 67 and 66 are each regularly in a circular ring along a circumferential direction
  • the interlocking means 65, 66, 67 are integrally formed with the interlocking elements 28, 30.
  • the interlocking means 65, 66, 67 are integrally formed with the interlocking elements 28, 30.
  • the positive-locking means 65, 66, 67 are formed on a, in each case the positive-locking element 28, 30 opposite end as a cam with an oval cross-section.
  • the positive locking means 66 of the positive locking element 30 further comprise a slightly curved, cuboid block, which is arranged between the oval part and the positive-locking element 30. All of the twelve positive locking means 65, 66, 67 have a chamfer 94.
  • the chamfer 94 is disposed at the oval end of the interlocking means 65, 66, 67 and has an inclination angle with respect to the interlocking means 65, 66, 67 of 45 ° and a smallest dimension of 1 mm.
  • the form-locking elements 28, 30 are rotatably mounted against each other in an assembled state of the tool holder 58 with respect to a rotation axis which corresponds to the machining rotation axis 54.
  • the tool holder 58 has a clamping force amplification unit 25, which is provided to reinforce a clamping force transmitted via the clamping element 14 to a larger relative clamping force of the positive-locking elements 28, 30 against each other.
  • the positive locking element 28 is pot-shaped and consists of a round bottom plate and a one-sided integrally formed on the bottom plate ring. An outer diameter of the ring corresponds to a diameter of the bottom plate.
  • the bottom plate has centrally a circular hole through which extends in a mounted state, the clamping element.
  • the interlocking means 65, 67 are arranged on a side facing away from the ring of the bottom plate. Between the positive locking means 65, 67 are in a circular ring six
  • the form-fitting element 30 is formed as a bottom plate with an attached ring.
  • An outer diameter of the attached ring is significantly smaller than a maximum diameter of the circular base plate and corresponds to an inner diameter of the hollow shaft 56, with which the positive-locking element 30 is pressed ( Figure 4).
  • a maximum diameter of the bottom plate of the positive-locking element 30 is smaller than a maximum inner diameter of the ring of the positive-locking element 28.
  • the prestressing force amplification unit 25 has two inclined surfaces 68, 70 , which are each arranged on different form-fitting elements 28, 30.
  • the inclined surfaces 68, 70 are formed by the inner wall and the edge and are formed as cones.
  • the inclined surfaces 68, 70 are formed as inner and outer cone.
  • a minimum diameter of the edge is slightly larger than a minimum diameter of the inner wall.
  • the inclined surfaces 68, 70 have the same angle of inclination, so that the edge in a clamping state, in which the interlocking elements 28, 30 are braced against each other, rests flat against the inner wall.
  • the inclination angle of the inclined surfaces 68, 70 is in a clamping state with respect to a straight line which intersects the inclined surfaces 68, 70 and which is arranged parallel to the machining rotation axis 54, 15 °.
  • the clamping force is converted by the inclined surfaces 68, 70 into a plurality of partial relative clamping forces, each perpendicular to the inclined surfaces 68, 70 and add up to an effective relative clamping force with which the inclined surfaces 68, 70 interact.
  • the relative clamping force is according to the reciprocal of the sine of 15 ° four times the clamping force.
  • a frictional connection between the interlocking elements 28, 30 caused by the clamping force is thus likewise increased in comparison to a configuration without a prestressing force amplification unit 25, in which only two faces of the interlocking elements 28, 30 lie in a plane on which the machining rotational axis 54 is perpendicular , be braced against each other.
  • the tool holder 58 has a limiting unit 26, which is provided to restrict a range of motion of a rotation and a movement of the positive-locking elements 28, 30 against each other.
  • the delimiting unit 26 in this case has two holes 96, 98 arranged diametrically in the interlocking elements 28, 30 and a bolt 82.
  • the bolt 82 has a length which corresponds to the outer diameter of the positive-locking element 28. In an assembled state, the holes 96, 98 overlap and the bolt 82 extends through the four holes 96, 98.
  • the holes 98 have a diameter corresponding to a diameter of the bolt 82.
  • the holes 96 have a diameter which is 1 mm larger than the diameter of the bolt 82.
  • the first positive locking element 28 can be moved in a small angular range around the interlocking element 30 until a limitation of the holes 96 abuts the bolt 82.
  • movement of the form-fitting element 28 against the form-fit element 30 along the machining rotation axis 54 is limited to a distance of 1 mm.
  • the tool holder 58 has an actuating unit 27, which leads to a
  • the adjusting unit 27 has an elastic element 32, which is provided to clamp the interlocking elements 28, 30 against each other when their relative position differs from the standard relative position.
  • the adjusting unit 27 is arranged in an assembled state between the form-locking elements 28, 30.
  • the elastic member 32 is made of a soft rubber and is formed substantially as an annular disc.
  • the elastic member 32 is formed of a single material.
  • the material of which the elastic member 32 is formed has a Shore hardness of 70.
  • a maximum outer diameter of the elastic element 32 corresponds to the minimum outer diameter of the bottom plate of the form-fitting element 30.
  • An edge of the elastic member 32 is also tapered.
  • the elastic element 32 has six formed as pockets with hole 24 formations 34, which are provided to receive the interlocking means 66 of the interlocking element 30. In an assembled state, the formations 34 each enclose one of the slightly curved cuboid blocks
  • Positive locking means 66 and the oval ends 66 of the positive locking means extend through the holes 24 therethrough.
  • the formations 34 are in turn received by the recesses 36 of the form-locking element 28.
  • In the circumferential direction 62 is at each point a formation 34 of the elastic member 32 between see the form-locking elements 28, 30 are arranged.
  • the elastic element 32 can be materially connected to the positive-locking element 28 and / or the positive-locking element 30, in particular adhesively bonded or welded.
  • the tool holder 58 with inserted machining tool 16 in a view in which the tool holder 58 is disposed behind the machining tool 16.
  • the positive-locking elements 28, 30 are formed by the configuration of the protrusions 34, the recesses 36 and the interlocking means 66, positioned such that in a mounted state, a curvature 86 between an interlocking means 67 of the interlocking element 28 and an adjacent interlocking means 66 of the interlocking element 30 by 1 ° greater than an angle 84 between the interlocking means 66 and a positive locking means 65 of the interlocking element 28.
  • the interlocking means 65th is in turn adjacent to the interlocking means 66 and differs from the interlocking means 67.
  • a sum of Wnkel 84, 86 between the interlocking means 65, 67 is 60 °.
  • the positive locking means 60 first engage around the tips of the positive locking means 65, 66, 67.
  • the positive locking means 60 are likewise oval in shape and are designed to take account of production inaccuracies. times larger than the oval ends of the interlocking means 65, 66, 67 are formed.
  • the interlocking means 60 are arranged uniformly in the machining tool 16 at angular intervals of 30 °.
  • the positive-locking element 28 is rotated in a further sliding of the machining tool 16 on the tool holder 58 relative to the positive-locking element 30 until the angle 84, 86 differ only so far from each other, for example, by 0.2 °, so that the machining tool 16 can be pushed completely onto the tool holder 58.
  • the elastic element 32 builds a slight tension between the form-locking elements 28, 30.
  • the positive locking means 60 engage around the oval positive locking means 65, 66,
  • the elastic element 32 ensures that a game that arises due to the larger formation of the positive locking means 60 against the positive locking means 65, 66, 67, between the machining tool 16 and the tool holder 58, and between the positive locking means 60 and the positive locking means 65, 66, 67, is canceled.
  • Machining tool 16 setting relative position differs from the standard relative position.
  • the set relative position is fixed by a clamping operation of the clamping unit 12.
  • the machining tool 16 can be removed from the tool holder 58.
  • the interlocking elements 28, 30 return to their standard relative position due to the tension of the elastic element 32.
  • the chamfers 94 can be dispensed with, with the positive-locking means 65, 67 protruding further from the tool holder 58 in an assembled state than the interlocking means 66.
  • the machining tool 16 is pushed onto the interlocking means 65, 67.
  • the machining tool 16 together with the positive-locking element 28 is manually rotated to positions of the positive locking means
  • Figure 4 is a section through the tool holder 58 and a part of the clamping unit 12 along a plane passing through the machining rotation axis
  • the trained as a hollow shaft 56 spindle 40 includes the ring of the form-fitting element 30 and is firmly connected thereto.
  • the hollow shaft 56 is further designed as a spreader clamping element 14 and a spring unit 76 which has a, designed as a spiral spring, compression spring 78, respectively.
  • the spring unit 76 clamps the form-locking element 30 against the clamping element 14.
  • the clamping element 14 is at a point at which the brackets of the clamping element 14 converge on a bolt 80 which is fixedly connected to the hollow shaft 56, stored.
  • the elastic element 32 and the interlocking element 28 are brought together with the interlocking element 30, so that the holes 96, 98 overlap.
  • the spring unit 76 is formed by other types of spring, for example a stack of disc springs.
  • the form-locking elements 28, 30 are formed like a slide, wherein one of the positive-locking elements 28,
  • straight guide means which serve to guide the other form-fitting element 28, 30 and that they are movably mounted against each other along a movement axis, which is oriented perpendicular to an axis which is parallel to the machining rotation axis.
  • Figures 5a and 5b show an alternative embodiment of the tool holder 58.
  • the tool holder 58a further comprises two positive locking elements 28a, 30a, each with six positive locking means 65a, 67a and 66a, an elastic
  • Element 32a and a bolt 82a The components are each shown in an exploded view obliquely from below ( Figure 5a) and obliquely from above ( Figure 5b).
  • An edge of a bottom plate of the interlocking element 30a and an inner wall of a ring of the interlocking element 28a are formed in a mounted state parallel to a machining rotation axis 54a.
  • the slightly curved, cuboid blocks of the interlocking means 66 are characterized by slightly curved prism-like blocks of the interlocking means 66a replaced.
  • the formations formed as pockets 34a of the elastic member 32a and the recesses 36a in the form-locking element 28a are adapted in shape accordingly.
  • the form-fitting elements 28a, 30a each have one in a ring between the positive locking means 66a (see a page) and the recesses 36a (see b side) and a hole in the middle the positively locking elements 28a, 30a arranged toothed structure.
  • the toothed structures are intended to interlock in an assembled condition.
  • the elastic element 32a is formed as a narrow ring.
  • the toothed structures each have a plurality of side-by-side ramparts, wherein the ramparts of the positive-locking element 30a are each formed by two inclined surfaces 68a and a top surface and the walls of the positive-engagement element 28a are each formed by two inclined surfaces 70a and one top surface, the top surface being in one plane is arranged, which is in an assembled state perpendicular to the machining rotation axis 54a.
  • the inclined surfaces 68a, 70a each have an angle to the top surface, which is 75 °.
  • FIG. 6 shows a section through the toothed structures in an assembled state.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Wood Science & Technology (AREA)
  • Jigs For Machine Tools (AREA)
  • Gripping On Spindles (AREA)

Abstract

L'invention concerne un dispositif de serrage d'outil, en particulier un dispositif de serrage d'outil oscillant, qui comporte un logement d'outil (58; 58a) présentant au moins un premier et un deuxième élément à complémentarité de forme (28, 30; 28a, 30a) qui sont prévus respectivement pour au moins un assemblage à complémentarité de forme avec un outil d'usinage (16) dans un sens circonférentiel (62) autour d'un axe de rotation d'usinage (54; 54a). Selon l'invention, les éléments à complémentarité de forme (28, 30; 28a, 30a) sont montés à rotation l'un par rapport à l'autre au moins autour d'un axe de rotation qui est orienté au moins sensiblement parallèlement à l'axe de rotation d'usinage (54; 54a) et/ou sont montés mobiles l'un par rapport à l'autre le long d'au moins un axe de déplacement qui est orienté au moins sensiblement perpendiculairement à un axe parallèle à l'axe de rotation d'usinage (54; 54a).
PCT/EP2012/054123 2011-05-04 2012-03-09 Dispositif de serrage d'outil Ceased WO2012150066A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201280021739.XA CN103501962B (zh) 2011-05-04 2012-03-09 工具夹紧装置
RU2013153479/02A RU2013153479A (ru) 2011-05-04 2012-03-09 Зажимное устройство для закрепления рабочего инструмента
US14/115,546 US20140182873A1 (en) 2011-05-04 2012-03-09 Tool chucking device
EP12710055.0A EP2704875A1 (fr) 2011-05-04 2012-03-09 Dispositif de serrage d'outil

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011075228.5 2011-05-04
DE102011075228.5A DE102011075228B4 (de) 2011-05-04 2011-05-04 Oszillationswerkzeugspannvorrichtung

Publications (1)

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WO2012150066A1 true WO2012150066A1 (fr) 2012-11-08

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PCT/EP2012/054123 Ceased WO2012150066A1 (fr) 2011-05-04 2012-03-09 Dispositif de serrage d'outil

Country Status (6)

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US (1) US20140182873A1 (fr)
EP (1) EP2704875A1 (fr)
CN (1) CN103501962B (fr)
DE (1) DE102011075228B4 (fr)
RU (1) RU2013153479A (fr)
WO (1) WO2012150066A1 (fr)

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Also Published As

Publication number Publication date
DE102011075228B4 (de) 2025-02-06
EP2704875A1 (fr) 2014-03-12
US20140182873A1 (en) 2014-07-03
CN103501962A (zh) 2014-01-08
CN103501962B (zh) 2016-07-06
DE102011075228A1 (de) 2012-11-08
RU2013153479A (ru) 2015-06-10

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